Quantum Physics Experiment Entangles Laser Photons

Spooky Quantum Entanglement Gets Extra 'Twist'

Jesse Emspak, LiveScience Contributor

Date: 06 November 2012 Time: 10:02 AM ET

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Here, a false-color image of a laser beam showing a superposition of entangled photons spinning in opposite directions. CREDIT: Copyright: Robert Fickler/University of Vienna View full size image

Quantum physics is the science of the very small. But physicists are making it bigger, setting records for the size and energies of objects they can get to exhibit quantum effects.

Now physicists at the University of Vienna in Austria have "virtually intertwined" or entangled two particles spinning faster than ever in opposite directions. Entanglement occurs when two particles remain connected so that actions performed on one affect the other, despite the distance between them. (Einstein referred to this eerie connection as "spooky action at a distance.")

 In the new study, Anton Fickler and his colleagues entangled two photons that had a high orbital angular momentum, a property that measures the twisting of a wave of light. In quantum physics, particles such as photons can behave as particles and waves.

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Source: LiveScience.com .

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